WOLFRAM SYSTEMMODELER

SMEE_Generator

Electrical excited synchronous machine operating as generator

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.SMEE_Generator"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This example compares a time transient and a quasi static model of a electrically excited synchronous machine. The electrically excited synchronous generators are connected to the grid and driven with constant speed. Since speed is slightly smaller than synchronous speed corresponding to mains frequency, rotor angle is very slowly increased. This allows to see several characteristics dependent on rotor angle.

Simulate for 30 seconds and plot versus rotorAngle|rotorAngleQS.rotorDisplacementAngle:

  • smpm|smpmQS.tauElectrical: machine torque

Since the rotor slip is very low the transient and quasi static electro magnetic torque are practically equal.

Parameters (7)

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fsNominal

Value: smeeData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

w

Value: Modelica.SIunits.Conversions.from_rpm(1499)

Type: AngularVelocity (rad/s)

Description: Nominal speed

Ie

Value: 19

Type: Current (A)

Description: Excitation current

Ie0

Value: 10

Type: Current (A)

Description: Initial excitation current

gamma0

Value: 0

Type: Angle (rad)

Description: Initial rotor displacement angle

smeeData

Value:

Type: SynchronousMachineData

Description: Machine data

Outputs (2)

Ptr

Default Value: powerSensor.power

Type: Power (W)

Description: Transient power

Pqs

Default Value: powerSensorQS.y.re

Type: Power (W)

Description: QS power

Components (27)

star

Type: Star

grounde

Type: Ground

sineVoltage

Type: SineVoltage

powerSensor

Type: PowerSensor

terminalBoxM

Type: MultiTerminalBox

smee

Type: SM_ElectricalExcited

smeeQS

Type: SM_ElectricalExcited

groundr

Type: Ground

groundrQS

Type: Ground

rampCurrent

Type: RampCurrent

rampCurrentQS

Type: RampCurrent

mechanicalPowerSensor

Type: MechanicalPowerSensor

mechanicalPowerSensorQS

Type: MechanicalPowerSensor

constantSpeed

Type: ConstantSpeed

constantSpeedQS

Type: ConstantSpeed

smeeData

Type: SynchronousMachineData

Description: Machine data

voltageSourceQS

Type: VoltageSource

starQS

Type: Star

groundeQS

Type: Ground

powerSensorQS

Type: PowerSensor

terminalBoxQS

Type: MultiTerminalBox

starMachineQS

Type: Star

groundMachineQS

Type: Ground

rotorAngle

Type: RotorDisplacementAngle

rotorAngleQS

Type: RotorDisplacementAngle

groundMachine

Type: Ground

starMachine

Type: Star